-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Am Fr den 28. Sep 2018 um 5:19 schrieb Walter Dnes: > On Tue, Sep 25, 2018 at 02:25:50PM +0100, Klaus Ethgen wrote > > I have set MAKEOPTS="-j3" in my make.conf. > I assume you have 2 cores on your cpu and you're adding 1 as per the > ancient rule.
True. > That may not be the best option anyways. See > https://blogs.gentoo.org/ago/2013/01/14/makeopts-jcore-1-is-not-the-best-optimization/ > The author of the blog post ran multiple tests, and concluded that > setting MAKEOPTS -j to the actual number of cores is slightly faster. > Years ago, the gcc compiler was less efficient, and adding 1 to -j did > improve compilation speed. That is apparently not the case today. Interesting thoughts. First, cpufreq-set seems to be not available on gentoo anymore. Doesn't matter, just giving it a try. It came out, that all build times have nearly the same sys times but the user and real times vary. Funny, this is a two CPU machine but the build with -j1 consumes the least user time. Just the real value gives the same pattern than on the site. Regards Klaus - -- Klaus Ethgen http://www.ethgen.ch/ pub 4096R/4E20AF1C 2011-05-16 Klaus Ethgen <[email protected]> Fingerprint: 85D4 CA42 952C 949B 1753 62B3 79D0 B06F 4E20 AF1C -----BEGIN PGP SIGNATURE----- Comment: Charset: ISO-8859-1 iQGzBAEBCgAdFiEEMWF28vh4/UMJJLQEpnwKsYAZ9qwFAluyBjsACgkQpnwKsYAZ 9qyOqAv+KPCXk0uftuWv7rQwzQlV9wgs9RH9OLuy9k8yXiKUTmIIjcqO7xMRJGKJ bCQCqo0IrA+ZGnKbDYWydPTeFwM05Sa6NYHlonEcyK3tJ83GkU6J1xedhemsuCmF eyfDn9RfQjie4C90xfCnEsov46VMcSKae1aokl2olTPPrsGcG+hjQNI6jpEtyjRu 9qzjxCdWbYho5E6PRoa4ZTvKCLSeaEiJl9fFY8Ouyy747sJPQf1lrsGsDmaf9Zxh psvUQQGmeja1l66fvi82P19BWG3EHLw08hFJut/uKvpFHSDI+kmXixJHp7TY3avo tmqeir1b/bq7tbBLkmpbCcOS7eYUDK0YwwENMcMQPk2l4ZC6e0xkVIlV3ZcubG2W QF9JUSKD2bN1h4He8y/APzFFSwkzGY38nQxTTZwXoCRUZqELDHXfqPJjK8x7qE7J 5OcuPkytVcM0vbXes6Yi38MfRXMt9Re4d9uAscL12vBZet/50fUA2y9eRCP3SW0T WHSMQ7ZT =a+QA -----END PGP SIGNATURE-----
